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preprocessor: submodule update: macro functions

time-shift
Houtan Bastani 2018-07-09 15:17:11 +02:00
parent ec3e32a12f
commit cfee93b080
2 changed files with 23 additions and 12 deletions
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doc/dynare.texi
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@ -10587,8 +10587,8 @@ strings.
It is possible to construct macro-expressions which can be assigned to
macro-variables or used within a macro-directive. The expressions are
constructed using literals of the four basic types (integers, strings,
arrays of strings, arrays of integers), macro-variables names and
constructed using literals of five basic types (integers, strings, arrays of
strings, arrays of integers, and string functions), macro-variable names, and
standard operators.
String literals have to be enclosed between @strong{double} quotes
@ -10651,6 +10651,14 @@ getting the length of an array: @code{length} operator (for example:
@code{[1,2,3]})
@end itemize
The following operators can be used on string functions:
@itemize
@item
comparison operators: @code{==}, @code{!=}
@item
concatenation of two strings: @code{+}
@end itemize
Macro-expressions can be used at two places:
@itemize
@item
@ -10706,16 +10714,18 @@ file will be searched for in the folders provided by @ref{-I} and
@end deffn
@deffn {Macro directive} @@#define @var{MACRO_VARIABLE} = @var{MACRO_EXPRESSION}
Defines a macro-variable.
Defines a macro-variable or macro-function
@customhead{Example 1}
@example
@@#define x = 5 // Integer
@@#define y = "US" // String
@@#define v = [ 1, 2, 4 ] // Integer array
@@#define w = [ "US", "EA" ] // String array
@@#define z = 3 + v[2] // Equals 5
@@#define t = ("US" in w) // Equals 1 (true)
@@#define x = 5 // Integer
@@#define y = "US" // String
@@#define v = [ 1, 2, 4 ] // Integer array
@@#define w = [ "US", "EA" ] // String array
@@#define z = 3 + v[2] // Equals 5
@@#define t = ("US" in w) // Equals 1 (true)
@@#define f(x) = " + @@@{x@} + @@@{y@}" // Defines a function 'f' with argument 'x'
// that returns the string: ' + @@@{x@} + US'
@end example
@customhead{Example 2}
@ -10723,15 +10733,16 @@ Defines a macro-variable.
@example
@@#define x = [ "B", "C" ]
@@#define i = 2
@@#define f(x) = " + @@@{x@}"
model;
A = @@@{x[i]@};
A = @@@{x[i] + f("D")@};
end;
@end example
is strictly equivalent to:
@example
model;
A = C;
A = C + D;
end;
@end example

2
preprocessor

@ -1 +1 @@
Subproject commit e376267a2867aff79989503f77a2fd2204ed9c8b
Subproject commit 244552393baec541e0d02a2c378a21a6c9409989